电脑可调温度控制器源程序

2011-10-10 00:10:55 编辑：年糕不好吃

/*-------------------------------

温度控制器V1.5
显示为三个共阳极LED
温度传感器用单总线DS18B20
CPU为2051，四个按键，分别为UP，DOWN，SET
温度调节上限为125度，下限为-55度
只能用于单只18B20

本软件仅供学习与参考，引用时请注明版权
http://www.ejdz.cn

明浩　2004/1/2
pnzwzw@cdle.net
-------------------------------*/

#include <AT89X051.H>
#include <intrins.h>
#define Key_UP            P3_0    //上调温度
#define Key_DOWN          P3_1    //下调温度
#define Key_SET           P1_7    //设定键（温度设定，长按开电源）
#define RelayOutPort      P3_5    //继电器输出
#define LEDPort           P1      //LED控制口
#define LEDOneC           P3_2    //LED DS1控制（百位）
#define LEDTwoC           P3_3    //LED DS2控制（十位）
#define LEDThreeC         P3_4    //LED DS3控制（个位）
#define TMPort                       P3_7       //DS1820 DataPort

unsigned char code LEDDis[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xFF,0xBF}; //0-9的LED笔划,0xFF为空,0xF7为负号

static unsigned char bdata StateREG;   //可位寻址的状态寄存器
sbit DS1820ON = StateREG^0;              //DS1820是否存在
sbit SetTF = StateREG^1;              //是否是在温度设置状态#p#分页标题#e#
sbit KeySETDown = StateREG^2;         //是否已按过SET键标识
sbit PowTF = StateREG^3;              //电源电源标识
sbit KeyTF = StateREG^4;                           //键盘是否允许

//sbit KeySETDowning = StateREG^5;           //SET是否正在按下
static unsigned char bdata TLV _at_ 0x0029;         //温度变量高低位
static unsigned char bdata THV _at_ 0x0028;
static signed char TMV;       //转换后的温度值
static unsigned char KeyV,TempKeyV;      //键值
static signed char TMRomV _at_ 0x0027;    //高温限制
static signed char TMSetV _at_ 0x0026;    //温度设定值
static unsigned char KSDNum;    //SET键连按时的采集次数
static unsigned char IntNum,IntNum2,IntNum3;    //中断发生次数，IntNum用于SET长按检测，IntNum2用于设定状态时LED闪烁
static signed char LED_One,LED_Two,LED_Three; //LED的显示位 LED_One为十位，LED_Two为个位
static unsigned char Sign; //负号标识

void main(void)
{
   void InitDS1820(void);   //定义函数
   void ROMDS1820(void);
   void TMVDS1820(void);
   void TMRDS1820(void);
   void TMWDS1820(void);
   void TMREDS1820(void);
   void TMERDS1820(void);
   void ReadDS1820(void);
   void WriteDS1820(void);
   void Delay_510(void);
   void Delay_110(void);
   void Delay_10ms(void);#p#分页标题#e#
   void Delay_4s(void);
   void V2ToV(void);

   StateREG = 0;   //初始化变量
   SetTF = 1;
   PowTF = 1;           //关电源
   THV = 0;
   TLV = 0;
   TMV = 0;
   KeyV = 0;
   TempKeyV = 0;
   KSDNum = 0;
   IntNum = 0;
   IntNum2 = 0;
   IntNum3 = 0;
   LED_One = 0;
   LED_Two   = 0;

   InitDS1820(); //初始化
   ROMDS1820();   //跳过ROM
   TMERDS1820(); //E2PRAM中温度上限值调入RAM
   InitDS1820(); //初始化
   ROMDS1820();   //跳过ROM
   TMRDS1820();   //读出温度指令
   ReadDS1820(); //读出温度值和上限值
   TMSetV = TMRomV; //拷贝保存在DS18B20ROM里的上限值到TMSetV

   EA = 1;                   //允许CPU中断
   ET0 = 1;               //定时器0中断打开
   TMOD = 0x1;           //设定时器0为模式1，16位模式
   TH0=0xB1;
   TL0=0xDF;               //设定时值为20000us（20ms）
   TR0 = 1;               //开始定时
   while(1);#p#分页标题#e#
}

//定时器0中断外理中键扫描和显示
void KeyAndDis_Time0(void) interrupt 1 using 2
{
TH0=0xB1;
   TL0=0xDF;               //设定时值为20000us（20ms)

   LEDPort = 0xFF;
if (!Key_UP)
    KeyV = 1;
if (!Key_DOWN)
    KeyV = 2;
if (!Key_SET)
    KeyV = 3;
   //KeySETDowning = 0; //清除
if (KeyV != 0)      //有键按下
    {
      Delay_10ms();   //延时防抖按下10ms再测
      if (!Key_UP)
        TempKeyV = 1;
      if (!Key_DOWN)
        TempKeyV = 2;
      if (!Key_SET)
        TempKeyV = 3;
      if (KeyV == TempKeyV)   //两次值相等为确定接下了键
        {
          if (KeyV == 3)      //按下SET键，如在SET状态就退出，否则进入
            {
                            //KeySETDowning = 1; //表明SET正在按下
              PowTF = 0;      //电源标识开
                            if (!KeyTF)
                  if (SetTF)#p#分页标题#e#
                                    {
                        SetTF = 0;    //标识位标识退出设定
                                        InitDS1820(); //初始化
                                    ROMDS1820();   //跳过ROM
                                    TMWDS1820();   //写温度上限指令
                                        WriteDS1820();   //写温度上限到DS18B20ROM
                                        WriteDS1820();   //写温度上限到DS18B20ROM
                                        WriteDS1820();   //写温度上限到DS18B20ROM
                                        InitDS1820(); //初始化
                                    ROMDS1820();   //跳过ROM#p#分页标题#e#
                                    TMREDS1820();   //温度上限值COPY回E2PRAM
                                    }
                  else
                    SetTF = 1;
              if (!KeySETDown) //没有第一次按下SET时，KeySETDown标识置1
                KeySETDown = 1;
              else
                KSDNum = KSDNum + 1; //前一秒内有按过SET则开始计数
            }
          if (SetTF) //在SET状态下
            {
              if ((KeyV == 1) && (!KeyTF))
                TMSetV = TMSetV + 1;    //上调温度
              if ((KeyV == 2) && (!KeyTF))
                TMSetV = TMSetV - 1;    //下调温度
              if (TMSetV <= -55)          //限制温度上下限#p#分页标题#e#
                TMSetV = -55;
              if (TMSetV >= 125)
                TMSetV = 125;
            }
        if ((!KeyTF) && (IntNum3 == 0)) KeyTF = 1; //当键盘处于可用时，锁定
        }

      if (KeySETDown)         //在2秒内按下了SET则计中断发生次数用于长按SET时计时用
        IntNum = IntNum + 1;
      if (IntNum > 55)     //中断发生了55次时（大约1.2秒）75为1.5秒左右
        {
          IntNum = 0;
                    KeySETDown = 0;
          if (KSDNum == 55)      //如一直长按了SET1.2秒左右
            {
              RelayOutPort = 1; //关闭继电器输出
              PowTF = 1;         //电源标识关
              LEDOneC = 0;
              LEDTwoC = 0;
              LEDThreeC = 0;
              LEDPort = 0xBF;      //显示"--"#p#分页标题#e#
              Delay_4s();        //延时
              LEDOneC = 1;
              LEDTwoC = 1;      //关显示
              LEDThreeC = 1;
              Delay_4s();
                        IntNum = 0;
                        IntNum2 = 0;
                        IntNum3 = 0;
            }
          KSDNum = 0;
         }
    }
KeyV = 0;
TempKeyV = 0;   //清空变量准备下次键扫描

if (!PowTF)
    {
      InitDS1820();   //初始化
      ROMDS1820();    //跳过ROM
      TMVDS1820(); //温度转换指令

      Delay_510();
      Delay_510(); //延时等待转换完成

      InitDS1820(); //初始化
      ROMDS1820();    //跳过ROM
      TMRDS1820();    //读出温度指令
      ReadDS1820(); //读出温度值#p#分页标题#e#

      V2ToV();        //转换显示值
      if (TMV > TMSetV)   //根据采集到的温度值控制继电器
        {
          RelayOutPort = 0;
            }
      else
            {
          RelayOutPort = 1;
        }

      if (SetTF) IntNum2 = IntNum2 + 1; //用于闪烁计数
      if (IntNum2 > 50 ) IntNum2 = 0;
            if (KeyTF) IntNum3 = IntNum3 + 1; //用于防止按键连按
            if (IntNum3 > 25)
                {
                    IntNum3 = 0;
                    KeyTF = 0;
                }

      if ((SetTF) && (IntNum2 < 25)) goto InitEnd; //计数在后半段时显示
      LEDPort = LED_One;
      LEDOneC = 0;
      Delay_510();
      LEDOneC = 1;    //显示百位数
      LEDPort = LED_Two;
      LEDTwoC = 0;
      Delay_510();
      LEDTwoC = 1;    //显示十位数#p#分页标题#e#
      LEDPort = LED_Three;
      LEDThreeC = 0;
      Delay_510();
      LEDThreeC = 1;    //显示个位数
    }
InitEnd:;
}

void V2ToV(void)   //数值转换
{
TLV = TLV >> 4;
THV = THV << 4;           //读出的高低位数值移位
TMV = TLV | THV;       //合并高低位放入TM为实际温度值
   Sign = 0;
if (SetTF || !Key_SET)
    Sign = TMSetV >> 7;          //取符号
else
     Sign = TMV >> 7;

   if (Sign)
        {
        if (SetTF || !Key_SET)
                {
                LED_One = (~(TMSetV-1)) / 100;          //SET状态下显示设定值
                LED_Two = ((~(TMSetV-1)) - LED_One * 100)/10;
                LED_Three = (~(TMSetV-1)) - LED_One * 100 - LED_Two * 10;
                }
        else
                {
                LED_One = (~TMV) / 100;                           //转换百位值       #p#分页标题#e#
                LED_Two = ((~TMV) - LED_One * 100)/10;
                LED_Three = (~TMV) - LED_One * 100 - LED_Two * 10;
                }
        }
   else
        {
        if (SetTF || !Key_SET)
                {
                LED_One = (TMSetV) / 100;          //SET状态下显示设定值
                LED_Two = (TMSetV - LED_One * 100)/10;
                LED_Three = TMSetV - LED_One * 100 - LED_Two * 10;
                }
        else
                {
                LED_One = (TMV) / 100;                           //转换百位值
                LED_Two = (TMV - LED_One * 100)/10;
                LED_Three = TMV - LED_One * 100 - LED_Two * 10;
                }
        }

//转LED字段
   if (LED_One) //超过百时十位的处理#p#分页标题#e#
        LED_Two = LEDDis[LED_Two];
   else
        {
            if (LED_Two == 0)
                LED_Two = LEDDis[10];
            else
                LED_Two = LEDDis[LED_Two];
        }
   if (Sign)
        LED_One = LEDDis[11];
   else
        {
            if (LED_One == 0)
                LED_One = LEDDis[10];
            else
                LED_One = LEDDis[LED_One];
        }
   LED_Three = LEDDis[LED_Three];
}

void InitDS1820(void)       //初始化DS1820
{
   TMPort = 1;       //拉高TMPort
   _nop_();      //保持一个周期
   TMPort = 0;       //拉低TMPort
Delay_510(); //延时 DS1820复位时间要500us的低电平
TMPort = 1;   //拉高TMPort
   _nop_();      //保持
   _nop_();
   _nop_();

Delay_110(); //延时110us 等待DS1820回应
if (!TMPort) //回应信号为低电平
    DS1820ON = 1;#p#分页标题#e#
else
    DS1820ON = 0;
Delay_110(); //延时
Delay_110();
TMPort = 1;   //拉高TMPort
}

void ROMDS1820(void) //跳过ROM匹配
{
#pragma asm
MOV A,#0CCH
MOV R2,#8
CLR C
WR1:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR1
SETB P3_7
#pragma endasm
}

void TMVDS1820(void) //温度转换指令
{
#pragma asm
MOV A,#44H
MOV R2,#8
CLR C
WR2:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR2
SETB P3_7
#pragma endasm
}

void TMRDS1820(void) //读出温度指令
{
#pragma asm
MOV A,#0BEH
MOV R2,#8
CLR C
WR3:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR3
SETB P3_7
#pragma endasm
}

void TMWDS1820(void) //写入温度限制指令
{
#pragma asm
MOV A,#04EH
MOV R2,#8
CLR C
WR13:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR13#p#分页标题#e#
SETB P3_7
#pragma endasm
}

void TMREDS1820(void)       //COPY RAM to E2PRAM
{
#pragma asm
MOV A,#48H
MOV R2,#8
CLR C
WR33:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR33
SETB P3_7
#pragma endasm
}

void TMERDS1820(void)       //COPY E2PRAM to RAM
{
#pragma asm
MOV A,#0B8H
MOV R2,#8
CLR C
WR43:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR43
SETB P3_7
#pragma endasm
}

void WriteDS1820(void)   //写入温度限制值
{
#pragma asm
   MOV A,26H                   //发出4EH写ROM指令后连发两个字节分别为上下限
MOV R2,#8
CLR C
WR23:
CLR P3_7
MOV R3,#6
DJNZ R3,$
RRC A
MOV P3_7,C
MOV R3,#23
DJNZ R3,$
SETB P3_7
NOP
DJNZ R2,WR23
SETB P3_7
#pragma endasm
}

void ReadDS1820(void) //读出温度值
{
#pragma asm
MOV R4,#3 ; 将温度高位和低位，高温限制位从DS18B20中读出
MOV R1,#29H ; 低位存入29H(TEMPER_L),高位存入28H(TEMPER_H)，高温限制位存入27H(TMRomV)
RE00:#p#分页标题#e#
MOV R2,#8
RE01:
CLR C
SETB P3_7
NOP
NOP
CLR P3_7
NOP
NOP
NOP
SETB P3_7
MOV R3,#09
RE10:
DJNZ R3,RE10
MOV C,P3_7
MOV R3,#23
RE20:
DJNZ R3,RE20
RRC A
DJNZ R2,RE01
MOV @R1,A
DEC R1
DJNZ R4,RE00
#pragma endasm
}

void Delay_510(void)   //延时510微秒
{
#pragma asm
   MOV R0,#7DH
   MOV R1,#02H
   TSR1:
   DJNZ R0,TSR1
   MOV R0,#7DH
   DJNZ R1,TSR1
#pragma endasm
}

void Delay_110(void)   //延时110微秒
{
#pragma asm
   MOV R0,#19H
   MOV R1,#02H
   TSR2:
   DJNZ R0,TSR2
   MOV R0,#19H
   DJNZ R1,TSR2
#pragma endasm
}

void Delay_10ms(void)   //延时10ms
{
#pragma asm
   MOV R0,#19H
   MOV R1,#0C8H
   TSR3:
   DJNZ R0,TSR3
   MOV R0,#19H
   DJNZ R1,TSR3
#pragma endasm
}

void Delay_4s(void)   //延时4s
{
#pragma asm
MOV R2,#28H
TSR5:
   MOV R0,#0FAH
   MOV R1,#0C8H
   TSR4:
   DJNZ R0,TSR4
   MOV R0,#0FAH
   DJNZ R1,TSR4
DJNZ R2,TSR5#p#分页标题#e#
#pragma endasm
}